2195118972 has 18 divisors (see below), whose sum is σ = 5548773048. Its totient is φ = 731706312.

The previous prime is 2195118941. The next prime is 2195119027. The reversal of 2195118972 is 2798115912.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30487728 + ... + 30487799.

Almost surely, 2^2195118972 is an apocalyptic number.

It is an amenable number.

2195118972 is an abundant number, since it is smaller than the sum of its proper divisors (3353654076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2195118972 is a wasteful number, since it uses less digits than its factorization.

2195118972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60975537 (or 60975532 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 2195118972 is about 46852.0967727166. The cubic root of 2195118972 is about 1299.6288826255.

The spelling of 2195118972 in words is "two billion, one hundred ninety-five million, one hundred eighteen thousand, nine hundred seventy-two".